In the multivariate Cox-regression model, in addition to GGT level, age at surgery was also determined to be an independent risk factor for native liver survival (P < 0.001 HR 1.02, 95% CI 1.01–1.03), weight at surgery, pre-operative TB, DB, ALP, ALT, AST, TBA, APTT, PT, FIB, INR, and CMV–IgM + were not correlated with the 2-year native liver survival (Table 3). This evidence concerns the gene CD40LG and tuberculosis.